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<FONT color="green">001</FONT>    package org.hackystat.sensorshell.command;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.util.Date;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.util.Timer;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.util.TimerTask;<a name="line.5"></a>
<FONT color="green">006</FONT>    <a name="line.6"></a>
<FONT color="green">007</FONT>    import org.hackystat.sensorshell.SensorShellException;<a name="line.7"></a>
<FONT color="green">008</FONT>    import org.hackystat.sensorshell.SensorShellProperties;<a name="line.8"></a>
<FONT color="green">009</FONT>    import org.hackystat.sensorshell.SingleSensorShell;<a name="line.9"></a>
<FONT color="green">010</FONT>    import org.hackystat.utilities.stacktrace.StackTrace;<a name="line.10"></a>
<FONT color="green">011</FONT>    <a name="line.11"></a>
<FONT color="green">012</FONT>    /**<a name="line.12"></a>
<FONT color="green">013</FONT>     * Implements the AutoSend facility, which automatically sends all SensorData to the Sensorbase<a name="line.13"></a>
<FONT color="green">014</FONT>     * at regular intervals as specified in the sensorshell.autosend.timeinterval property.<a name="line.14"></a>
<FONT color="green">015</FONT>     * @author Philip Johnson<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    public class AutoSendCommand extends Command {<a name="line.17"></a>
<FONT color="green">018</FONT>      <a name="line.18"></a>
<FONT color="green">019</FONT>      /** The timer that enables periodic sending. */<a name="line.19"></a>
<FONT color="green">020</FONT>      private Timer timer = null;<a name="line.20"></a>
<FONT color="green">021</FONT>      /** The autosend command task for this shell. */<a name="line.21"></a>
<FONT color="green">022</FONT>      private AutoSendCommandTask task = null;<a name="line.22"></a>
<FONT color="green">023</FONT>      <a name="line.23"></a>
<FONT color="green">024</FONT>      /**<a name="line.24"></a>
<FONT color="green">025</FONT>       * Creates the AutoSendCommand and starts a timer-based process running that wakes up and <a name="line.25"></a>
<FONT color="green">026</FONT>       * invokes send based upon the value of the SensorShellProperties autosend timeinterval.<a name="line.26"></a>
<FONT color="green">027</FONT>       * @param shell The sensorshell. <a name="line.27"></a>
<FONT color="green">028</FONT>       * @param properties The sensorproperties. <a name="line.28"></a>
<FONT color="green">029</FONT>       */<a name="line.29"></a>
<FONT color="green">030</FONT>      public AutoSendCommand(SingleSensorShell shell, SensorShellProperties properties) {<a name="line.30"></a>
<FONT color="green">031</FONT>        super(shell, properties);<a name="line.31"></a>
<FONT color="green">032</FONT>        double minutes = properties.getAutoSendTimeInterval();<a name="line.32"></a>
<FONT color="green">033</FONT>        // Don't set up a timer if minutes value is close to 0.<a name="line.33"></a>
<FONT color="green">034</FONT>        if (minutes &lt; 0.009) {<a name="line.34"></a>
<FONT color="green">035</FONT>          this.shell.println("AutoSend disabled.");<a name="line.35"></a>
<FONT color="green">036</FONT>        }<a name="line.36"></a>
<FONT color="green">037</FONT>        else {<a name="line.37"></a>
<FONT color="green">038</FONT>          // Otherwise set up a timer with the newly specified value.<a name="line.38"></a>
<FONT color="green">039</FONT>          this.timer = new Timer(true);<a name="line.39"></a>
<FONT color="green">040</FONT>          int milliseconds = (int) (minutes * 60 * 1000);<a name="line.40"></a>
<FONT color="green">041</FONT>          this.task = new AutoSendCommandTask(shell);<a name="line.41"></a>
<FONT color="green">042</FONT>          this.timer.schedule(task, milliseconds, milliseconds);<a name="line.42"></a>
<FONT color="green">043</FONT>          this.shell.println("AutoSend time interval set to " + (int) (minutes * 60) + " seconds");<a name="line.43"></a>
<FONT color="green">044</FONT>        }<a name="line.44"></a>
<FONT color="green">045</FONT>      }<a name="line.45"></a>
<FONT color="green">046</FONT>      <a name="line.46"></a>
<FONT color="green">047</FONT>      /**<a name="line.47"></a>
<FONT color="green">048</FONT>       * Cancels the timer if there is one. <a name="line.48"></a>
<FONT color="green">049</FONT>       */<a name="line.49"></a>
<FONT color="green">050</FONT>      public void quit() {<a name="line.50"></a>
<FONT color="green">051</FONT>        if (this.timer != null) {<a name="line.51"></a>
<FONT color="green">052</FONT>          this.timer.cancel();<a name="line.52"></a>
<FONT color="green">053</FONT>        }<a name="line.53"></a>
<FONT color="green">054</FONT>      }<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>      <a name="line.56"></a>
<FONT color="green">057</FONT>      /**<a name="line.57"></a>
<FONT color="green">058</FONT>       * Returns the exception that was thrown during autosend, or null if none was thrown.<a name="line.58"></a>
<FONT color="green">059</FONT>       * @return The exception if one was thrown previously, or null if none was thrown. <a name="line.59"></a>
<FONT color="green">060</FONT>       */<a name="line.60"></a>
<FONT color="green">061</FONT>      public SensorShellException getException() {<a name="line.61"></a>
<FONT color="green">062</FONT>        return (this.task == null) ? null : this.task.getException();<a name="line.62"></a>
<FONT color="green">063</FONT>      }<a name="line.63"></a>
<FONT color="green">064</FONT>      <a name="line.64"></a>
<FONT color="green">065</FONT>      /**<a name="line.65"></a>
<FONT color="green">066</FONT>       * Inner class providing a timer-based command to invoke the send() method of the SensorShell.<a name="line.66"></a>
<FONT color="green">067</FONT>       * @author Philip M. Johnson<a name="line.67"></a>
<FONT color="green">068</FONT>       */<a name="line.68"></a>
<FONT color="green">069</FONT>      private static class AutoSendCommandTask extends TimerTask {<a name="line.69"></a>
<FONT color="green">070</FONT>        <a name="line.70"></a>
<FONT color="green">071</FONT>        /** The sensor shell. */<a name="line.71"></a>
<FONT color="green">072</FONT>        private SingleSensorShell shell;<a name="line.72"></a>
<FONT color="green">073</FONT>        /** The exception that was thrown by this task. */<a name="line.73"></a>
<FONT color="green">074</FONT>        private SensorShellException exception = null;<a name="line.74"></a>
<FONT color="green">075</FONT>        /** The time at which the exception was thrown. */<a name="line.75"></a>
<FONT color="green">076</FONT>        private Date exceptionTime = null;<a name="line.76"></a>
<FONT color="green">077</FONT>        <a name="line.77"></a>
<FONT color="green">078</FONT>        /**<a name="line.78"></a>
<FONT color="green">079</FONT>         * Creates the TimerTask.<a name="line.79"></a>
<FONT color="green">080</FONT>         * @param shell The sensorshell.<a name="line.80"></a>
<FONT color="green">081</FONT>         */<a name="line.81"></a>
<FONT color="green">082</FONT>        public AutoSendCommandTask(SingleSensorShell shell) {<a name="line.82"></a>
<FONT color="green">083</FONT>          this.shell = shell;<a name="line.83"></a>
<FONT color="green">084</FONT>        }<a name="line.84"></a>
<FONT color="green">085</FONT>    <a name="line.85"></a>
<FONT color="green">086</FONT>        /** Invoked periodically by the timer in AutoSendCommand. */<a name="line.86"></a>
<FONT color="green">087</FONT>        @Override<a name="line.87"></a>
<FONT color="green">088</FONT>        public void run() {<a name="line.88"></a>
<FONT color="green">089</FONT>          this.shell.println("Timer-based invocation of send().");<a name="line.89"></a>
<FONT color="green">090</FONT>          try {<a name="line.90"></a>
<FONT color="green">091</FONT>            this.shell.send();<a name="line.91"></a>
<FONT color="green">092</FONT>          }<a name="line.92"></a>
<FONT color="green">093</FONT>          catch (SensorShellException e) {<a name="line.93"></a>
<FONT color="green">094</FONT>            this.shell.getLogger().info("Error in timer-based invocation: " + StackTrace.toString(e));<a name="line.94"></a>
<FONT color="green">095</FONT>            this.exceptionTime = new Date();<a name="line.95"></a>
<FONT color="green">096</FONT>            this.exception = e;<a name="line.96"></a>
<FONT color="green">097</FONT>          }<a name="line.97"></a>
<FONT color="green">098</FONT>        }<a name="line.98"></a>
<FONT color="green">099</FONT>        <a name="line.99"></a>
<FONT color="green">100</FONT>        /**<a name="line.100"></a>
<FONT color="green">101</FONT>         * The exception that was thrown during the run() method of this task.<a name="line.101"></a>
<FONT color="green">102</FONT>         * @return The thrown exception, or null if no exception was thrown.<a name="line.102"></a>
<FONT color="green">103</FONT>         * <a name="line.103"></a>
<FONT color="green">104</FONT>         */<a name="line.104"></a>
<FONT color="green">105</FONT>        public SensorShellException getException() {<a name="line.105"></a>
<FONT color="green">106</FONT>          return this.exception;<a name="line.106"></a>
<FONT color="green">107</FONT>        }<a name="line.107"></a>
<FONT color="green">108</FONT>        <a name="line.108"></a>
<FONT color="green">109</FONT>        /**<a name="line.109"></a>
<FONT color="green">110</FONT>         * The time that an exception was thrown during the run() method of this task.<a name="line.110"></a>
<FONT color="green">111</FONT>         * @return The thrown exception time, or null if no exception was thrown. <a name="line.111"></a>
<FONT color="green">112</FONT>         * <a name="line.112"></a>
<FONT color="green">113</FONT>         */<a name="line.113"></a>
<FONT color="green">114</FONT>        public Date getExceptionTime() {<a name="line.114"></a>
<FONT color="green">115</FONT>          return this.exceptionTime;<a name="line.115"></a>
<FONT color="green">116</FONT>        }<a name="line.116"></a>
<FONT color="green">117</FONT>        <a name="line.117"></a>
<FONT color="green">118</FONT>      }<a name="line.118"></a>
<FONT color="green">119</FONT>    }<a name="line.119"></a>




























































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